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Trouble making leaf springs

michael.puckett
I'm trying to use the leaf spring generator in ADAMS to model a leaf spring I have in CAD and I can't seem to get the leaf spring to generate. I double checked with one of the standard ones included in the atruck database and that worked fine, so I'm thinking it has something to do with my variables. I'm not sure what the problem is though. I have picked points off my CAD model to put into the leaf plotting window and have measured the arc lengths that those points generate as well to make sure I'm not running into some kind of issue where the spring is too short or too long to fit between the frame hardpoints, but I'm running out of ideas on what to change. Pretty much everything but the leaf geometry itself I have set to match the sample atruck spring to try to eliminate something there as an option. Any ideas on what to check next? The error is just the vague "can't make python file" one, but I know it's not a permissions issue (like another thread on the forum here) as I can make a python file fine in that directory with the sample spring.
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    That's basically what I did. I took the atruck leaf spring example file and just changed the geometry of it (the plot points and overall lengths) and it won't build, so while I'm guessing the problem must somehow lie there, the errors it gives me don't really give me an idea of what to look for. The dimensions I have aren't that far off from what is in the atruck example spring as far as overall sizes, but the spring I have is a fair deal more flat and thick. It would be nice if the software offered a little more guidance (something like overall length not compatible with plot points) or something to that effect instead of just the "failure to build" error message.
     
    I did have one thing come to mind though. For the plot points for the spring, are those supposed to be at the free loaded state? I think the points I pulled off of CAD are at the curb loading already, so that would be one more thing to try at least. It's not clear in the documentation what you are supposed to use, but I just realized that's the default model that opens when I look at the springs.
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    That's basically what I did. I took the atruck leaf spring example file and just changed the geometry of it (the plot points and overall lengths) and it won't build, so while I'm guessing the problem must somehow lie there, the errors it gives me don't really give me an idea of what to look for. The dimensions I have aren't that far off from what is in the atruck example spring as far as overall sizes, but the spring I have is a fair deal more flat and thick. It would be nice if the software offered a little more guidance (something like overall length not compatible with plot points) or something to that effect instead of just the "failure to build" error message.
     
    I did have one thing come to mind though. For the plot points for the spring, are those supposed to be at the free loaded state? I think the points I pulled off of CAD are at the curb loading already, so that would be one more thing to try at least. It's not clear in the documentation what you are supposed to use, but I just realized that's the default model that opens when I look at the springs.
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